From: School-based smoking prevention programs with the promise of long-term effects
Category I | Â |
   High quality studies of |  |
   Programs that were successful in reducing smoking in the short term, and |  |
   Included significant effects into high school (grades 10–12) or beyond. |  |
   Two groups: |  |
School-based only | Â |
School plus community or mass media | Â |
Category II | Â |
   High quality studies of |  |
   Programs that were very successful in reducing smoking in the short term, and were |  |
   Of a large enough scope and sequence to suggest likely medium- and long-term effects |  |
   Two groups; |  |
School-based only | Â |
School plus community or mass media | Â |
Category III | Â |
   Any studies of |  |
   Effects of smoking prevention in developing countries |  |